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Claude Opus 4.6 vs Gemini 3 Flash

Complete pricing and performance comparison between Anthropic's Claude Opus 4.6 and Google's Gemini 3 Flash.

Quick Verdict

Cheaper
Gemini 3 Flash
10.0x cheaper input, 8.3x cheaper output
Larger Context
Gemini 3 Flash
1.0M vs 200K
Higher Quality
Claude Opus 4.6
Score: 47 vs 35
Faster
Gemini 3 Flash
184 vs 56 tok/s

Pricing Comparison

SpecClaude Opus 4.6Gemini 3 FlashDifference
ProviderAnthropicGoogle
Input / 1M tokens$5$0.5Gemini 3 Flash is 90% more expensive
Output / 1M tokens$25$3Gemini 3 Flash is 88% more expensive
Context Window200K1.0M5x difference
Max Output32K66K

Performance Benchmarks

MetricClaude Opus 4.6Gemini 3 FlashWinner
Quality Index4735Claude Opus 4.6
Output Speed56 tok/s184 tok/sGemini 3 Flash
Time to First Token1.77s0.80sGemini 3 Flash
Value (Quality/$)9.370.0Higher = better value

Benchmark data from Artificial Analysis. Quality Index is a composite score across reasoning, coding, and knowledge tasks.

Cost at Scale

Estimated cost at different usage levels (3:1 input-to-output token ratio, typical for chat).

UsageClaude Opus 4.6Gemini 3 FlashSavings
Single request
1K in / 300 out
$0.013$0.0014Gemini 3 Flash saves $0.011
10 requests
10K in / 3K out
$0.125$0.014Gemini 3 Flash saves $0.111
100 requests
100K in / 30K out
$1.25$0.140Gemini 3 Flash saves $1.11
1,000 requests
1M in / 300K out
$12.50$1.40Gemini 3 Flash saves $11.10
10,000 requests
10M in / 3M out
$125.00$14.00Gemini 3 Flash saves $111.00
1M requests/mo
1B in / 300M out
$12500.00$1400.00Gemini 3 Flash saves $11100.00

Pros & Cons

Claude Opus 4.6 Strengths

  • +Higher quality score (47 vs 35)

Gemini 3 Flash Strengths

  • +Cheaper input tokens
  • +Cheaper output tokens
  • +Larger context window (1.0M vs 200K)
  • +Higher max output tokens
  • +Faster output (184 vs 56 tok/s)
  • +Lower latency (faster first token)

When to Use Each Model

Choose Claude Opus 4.6 for

  • →Tasks requiring maximum accuracy and reasoning

Choose Gemini 3 Flash for

  • →Budget-conscious projects where cost is the primary factor
  • →Long documents, large codebases, or multi-turn conversations
  • →Generating long-form content or detailed code
  • →Real-time applications, chat, or autocomplete

Frequently Asked Questions

Which is cheaper, Claude Opus 4.6 or Gemini 3 Flash?
For input tokens, Gemini 3 Flash is 10.0x cheaper at $0.5/1M tokens. For output tokens, Gemini 3 Flash is 8.3x cheaper at $3/1M tokens. At typical usage (1M input + 300K output), Claude Opus 4.6 costs $12.50 vs Gemini 3 Flash at $1.40.
What's the context window difference?
Claude Opus 4.6 supports 200K context (200,000 tokens), while Gemini 3 Flash supports 1.0M (1,048,576 tokens). Gemini 3 Flash can handle 5x more context in a single request.
Which model has better benchmarks?
Quality Index: Claude Opus 4.6 scores 47 vs Gemini 3 Flash at 35. Speed: Claude Opus 4.6 generates 56 tok/s vs Gemini 3 Flash at 184 tok/s. Time to first token: Claude Opus 4.6 at 1.77s vs Gemini 3 Flash at 0.80s.
When should I choose Claude Opus 4.6 over Gemini 3 Flash?
Choose Claude Opus 4.6 when you need: Higher quality score (47 vs 35). Choose Gemini 3 Flash when you need: Cheaper input tokens, Cheaper output tokens, Larger context window (1.0M vs 200K), Higher max output tokens, Faster output (184 vs 56 tok/s), Lower latency (faster first token).
How much would 10,000 API requests cost?
At 1K input + 300 output tokens per request (typical chat): Claude Opus 4.6 = $125.00, Gemini 3 Flash = $14.00. At 10K input + 1K output per request (longer conversations): Claude Opus 4.6 = $750.00, Gemini 3 Flash = $80.00.

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Claude Opus 4.6 DetailsGemini 3 Flash DetailsFull Pricing TableCost Calculator